<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <title>扩展弹窗</title>
  <link rel="stylesheet" href="styles.css">
</head>
<body>
  <h1>你好，Chrome 扩展！</h1>
  <button id="hello-btn">点击我</button>
  <script src="popup.js"></script>
</body>
</html> 